Despite losing DeMarco Murray, the Dallas Cowboys are still sure to have an explosive offense in 2015.

Why you ask?

Well, whenever you have a quarterback-wide receiver duo such as Tony Romo and Dez Bryant, you can bet your pretty penny you’ll be ranked in the top 10. Last year, the dynamic duo combined for 50 touchdowns.

“It’s self-explanatory, when you look at those guys on film, they’re just opening holes,” McFadden said. “They have a great group of guys that are working hard. Even there now working out, the whole O-line is there right now before OTAs, so it’s a great group of guys and they have a great thing going. … I’m looking forward to being there with them.”

“C.J. deserves the No. 1 spot right now. I’m most definitely going to try to work to get it back. And I believe that I will. I like coming in and being the underdog, just keeping my head down, my mouth shut and just working.”

No mater who the starting back is, expect to see a healthy dose of both guys.

Whenever you have Manning, along with two elite receivers, it’s safe to say Denver will be more than capable of putting up points in bunches.

When it comes to overall depth at the skill positions, the San Diego Chargers may have the most of it.They have guys like rookie Melvin Gordon, Branden Oliver, Keenan Allen, Malcolm Floyd, Stevie Johnson, Danny Woodhead and even Jacoby Jones.

Not to mention the obvious suspects in Philip Rivers and Antonio Gates.

With their depth in the pass catcher department, getting production from the running game is something that would take San Diego’s offense to another level.

“Oh, it’s exciting! I know a lot of us and the guys on this team saw those highlights of his on Saturday nights. We watched those big games. He had some really, really big games and it seemed like he was having them every week. He adds another element to our running back group, which is great. I’ve said this to you a number of times how I think we’re at our best when we are balanced. I think he gives us a better chance to be that.”

San Diego was 10th in passing last year, but they ranked 30th on the ground. If Gordon is able to live up to the hype, it’ll force defenses to be honest, which will open up things even more for Rivers down the field.

“I’m just going out to practice every day trying to improve, trying to get my teammates better and be better,” Garoppolo said. “We’ll go from there. I just have the mindset that I’m trying to get better. That’s all you can control at the end of the day.”

Having Gronk at his disposal is a good security blanket to have and relying more on the run is something New England may have to do as well.

“I think any season that ends and didn’t end the way you wanted it to on a personal level is added motivation. I think I ended of the year well [with a Super Bowl], but personally I have a lot to improve.”

About Mark Gunnels

Mark Gunnels is an NFL columnist for Football Insiders. He has several years of experience covering the NFL and NCAA football. He's the radio color commentator for Lincoln University football. Mark's work has been featured on Sports Illustrated, Fox Sports and Yard Barker.